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    • 74. 发明授权
    • Cache memory system for vector processing
    • 用于向量处理的缓存存储器系统
    • US5379393A
    • 1995-01-03
    • US882857
    • 1992-05-14
    • Qing Yang
    • Qing Yang
    • G06F11/34G06F12/08G06F12/02G06F12/16
    • G06F12/0875G06F11/3447G06F2201/885
    • A cache memory system for use during vector processing in a processor. The processor contains a central processing unit (CPU) and a main memory. The system includes a vector cache memory, a first address register, a main memory address calculation unit, and a cache address calculation unit. The first register stores a first address associated with an instruction executed by the CPU. The main memory address calculation unit is coupled to the first address register for calculating a second address utilizing the first address and vector stride data associated with said executed instruction. The second address is utilized to access the main memory. The cache address calculation unit is coupled to both the first address register and the main memory address calculation unit for calculating the third address utilizing portions of the first address and portions of the second address. The third address is utilized to access the vector cache memory.
    • 一种在处理器中的向量处理期间使用的高速缓冲存储器系统。 处理器包含一个中央处理单元(CPU)和一个主存储器。 该系统包括矢量高速缓冲存储器,第一地址寄存器,主存储器地址计算单元和高速缓存地址计算单元。 第一个寄存器存储与CPU执行的指令相关联的第一个地址。 主存储器地址计算单元耦合到第一地址寄存器,用于利用与所执行的指令相关联的第一地址和矢量步幅数据来计算第二地址。 第二个地址用于访问主存储器。 高速缓存地址计算单元耦合到第一地址寄存器和主存储器地址计算单元,用于利用第一地址的部分和第二地址的部分来计算第三地址。 第三个地址用于访问向量高速缓冲存储器。
    • 77. 发明授权
    • Process to prepare pyrimidine nucleosides
    • 制备嘧啶核苷的方法
    • US5077403A
    • 1991-12-31
    • US568412
    • 1990-08-16
    • Elie AbushanabChandra Vargeese
    • Elie AbushanabChandra Vargeese
    • C07H19/06C07H23/00
    • C07H23/00C07H19/06
    • A process for the production of a compound of the formula ##STR1## where R.sub.1 and R.sub.2 each are alkyl C.sub.1 -C.sub.16, aryl, aralkyl, alkenyl, alkynyl, cyano, carboxy and esters, carboximido, N-monosubstituted and N,N-disubstituted carboximido with alkyl, aralkyl, and aryl groups; R.sub.3 is tertiary butyldimethyl silyl, R.sub.4 is tertiarybutyldimethylsilyl, trimethylsilyl, X=O or NH comprising condensing a compound of the formula ##STR2## wherein R.sub.3 and R.sub.4 are as defined above with a compound of either the formula: ##STR3## wherein R.sub.1 and R.sub.2 are as defined above and R.sub.5 is C.sub.1 -C.sub.4 ; in the presence of a reaction-inert solvent at a temperature of from 50.degree.to about 150.degree. C. forming an intermediate and oxidizing the intermediate product, to form the desired compound of formula I. The products are antiviral.
    • 制备式Ⅰ化合物的方法,其中R 1和R 2各自为C 1 -C 16烷基,芳基,芳烷基,烯基,炔基,氰基,羧基和酯,碳代亚氨基,N-单取代和N,N-二 具有烷基,芳烷基和芳基的二取代的羰基亚氨基; R3是叔丁基二甲基甲硅烷基,R4是叔丁基二甲基甲硅烷基,三甲基甲硅烷基,X = O或NH,其包括将下式化合物(其中R 3和R 4如上定义)与下式化合物缩合: 图像IIIb其中R1和R2如上定义,R5是C1-C4; 在反应惰性溶剂存在下,在50至150℃的温度下形成中间体并氧化中间产物,形成所需的式I化合物。产物是抗病毒的。